JPS5846165B2 - Fixed iron core of plunger type electromagnet device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a fixed iron core of a plunger type electromagnet device, and more specifically to a fixed iron core A in which a large number of fixed iron pieces 1 are laminated. One end of each fixed iron piece 1 in contact with the oil mat 2 is recessed from one side to the other side, and a recess 3 is formed on one side of each fixed iron piece 1 and a convex portion 4 is formed on the other side, and a plunger 5 is disposed on the side. The vicinity of the magnetic pole surface 7 at the other end to be installed is tightened and fixed with a tightening pin 6, and the convex part 4 of the fixed iron piece 1 adjacent to the concave part 3 of the fixed iron piece 1 is fitted to connect the concave part 3 and the convex part 4. The fixed iron core of a plunger type electromagnet device is constructed by abutting the oil mat 2 at the fitted end and welding the fitted end between the recess 3 and the protrusion 4 to the yoke 10. It is something.

In the fixed iron core of the conventional plunger type electromagnet device,
As shown in FIGS. 1a, b, and c, the vicinity of the magnetic pole face 7 formed by a large number of fixed iron pieces 1 is tightened and fixed with a tightening pin 6, and the other end in contact with the oil mat 2 is also tightened with a tightening pin 6. The fixed iron core A was tightened and fixed, and as shown in FIG. 2, the fixed iron core A was integrated with the yoke 10 by welding.

However, in such a case, since the fixed iron pieces 1 are in close contact with each other, it is difficult for oil to impregnate between the fixed iron pieces 1 from the oil mat 2 due to capillary action, and the constriction deformation is large, and furthermore, the constriction pin In order to drill a large number of holes 9 through each fixed iron piece 1, each fixed iron piece 1
The volume of the material became smaller, reducing its strength.

The present invention has been made in view of the above points, and its purpose is to smoothly supply oil between each fixed iron piece even though each fixed iron piece is securely stacked and fixed. It is an object of the present invention to provide a fixed iron core for a plunger type electromagnet device, which prevents deformation due to constriction by reducing the number of locations where the constriction is fixed by constriction pins, and does not cause a decrease in strength.

Hereinafter, the present invention will be explained in detail with reference to the embodiments shown in FIGS. 3 to 5.

1 is a fixed iron piece, one end in contact with the oil mat 2 is recessed to form a recess 3 on one side and a protrusion 4 on the other side, and the other end is provided with a plunger 5 on the side; A hole for insertion of the restricting pin 6 is bored in the vicinity of the magnetic pole face 7.

Then, by stacking a large number of fixed iron pieces 1 and fitting the convex part 4 of the adjacent fixed iron piece 1 into the concave part 3 of the fixed iron piece 1, the fixing iron core A is fixed by passing the tightening pin 6 through the hole. form.

Therefore, as the fixed iron core A is biased and tightened only in the vicinity of the magnetic pole surface 7, the end of the fixed iron core A in contact with the oil mat 2 expands outward as shown in FIG. A slight gap f is created between the iron pieces 1, and oil is smoothly impregnated from the oil mat 2 into the spaces between the fixed iron pieces 1 by capillary action.

10 is a U-shaped yoke, and upper and lower plates 13 and 14 extend from a side plate 12 having a plunger guide hole 11 in the center thereof.

20 is a winding frame for the coil 30, and a through hole 21 is provided in the horizontal direction.

This winding frame 20 has a coil 30 wound around its outer periphery and is fitted between the upper and lower plates 13 and 14 so that the guide hole 11 and the through hole 21 communicate with each other.

The end of the fixed iron core A on the magnetic pole surface 7 side is inserted into the through hole 21, and the upper and lower surfaces of the end on the side that contacts the oil mat 2 are welded to the tips of the upper and lower plates 13 and 14 of the yoke 10. As a result, it is integrated with the yoke 10.

Therefore, the ends of the fixed iron core A in contact with the oil mat 2 can be welded to the upper and lower plates 13 and 14 of the yoke 10, so that each fixed iron piece 1 can withstand the impact of the plunger 5.
is prevented from opening.

31 is a fixed iron core, and 32 is a shearing coil.

This constitutes an electromagnet device X. Reference numeral 33 denotes a container body, and the electromagnet device X is disposed within this container body 33.

A pivot plate 15 extends from the side plate 12 of the yoke 10 in a direction opposite to the upper and lower plates 13 and 14.

Reference numeral 35 denotes an inverter that links the plunger 5 and the movable contact base 34, and is pivotally supported by the pivot plate 15.

This constitutes an electromagnetic relay y. In the present invention, as described above, one end of each fixed iron piece in contact with the oil mat is recessed to form a concave portion on one side of each fixed iron piece and a convex portion on the other side, and the plunger is disposed on the side. The vicinity of the magnetic pole surface at the other end was tightened and fixed with a tightening pin, and the convex part of the fixed iron piece adjacent to the concave part of the fixed iron piece was fitted, so that each fixed iron piece did not shift and the end in contact with the oil mat was fixed. It expands outward to create a small gap between each fixed iron piece, and as a result, oil is smoothly impregnated from the oil mat into each fixed iron piece by capillary action, extending the life of the fixed iron core.
In addition, the number of places where the strangling is fixed by the strangling pins is reduced, preventing deformation due to strangulation, and there is no need to provide as many holes for strangling on each fixed iron piece, thereby preventing a decrease in strength due to a decrease in the volume of the fixed iron piece. Furthermore, since the fixed iron core is connected to the yoke by the vinegar solution, despite the above effects, each fixed iron piece can be prevented from opening due to the impact of the plunger, and the number of places where tightening pins are used is also reduced. This shortens the tightening process, improves the productivity of the fixed iron core, and has the effect of reducing the number of parts and weight.

2

[Brief explanation of the drawing]

Figures 1a, b, and c are front views showing conventional examples, respectively;
FIG. 2 is a side view, an enlarged sectional view taken along the line A-A, and FIG. 2 is a front view showing a conventional example coupled to a yoke, and FIG. b and c are respectively a front view, a side view, and an enlarged BB sectional view showing an embodiment of the present invention; FIG. 4 is a front view showing the embodiment of the present invention coupled to a yoke; FIGS. b and c are a front sectional view, a broken side view, and a plan view showing the embodiment of the present invention arranged in an electromagnetic relay, 1 is a fixed iron piece, 2 is an oil mat, 3 is a four part, 4 is a convex part, 5 is plunger, 6
is a choke pin, and 7 is a magnetic pole surface.

Claims (1)

[Claims] 1 A fixed iron core consisting of a number of fixed iron pieces laminated, one end of each fixed iron piece in contact with the oil mat is recessed from one side to the other, and one recess on one side of each fixed iron piece is recessed on the other side. A convex portion is formed respectively, and the vicinity of the magnetic pole surface at the other end where the plunger is disposed on the side is tightened and fixed with a constriction pin, and the convex portion of the fixed iron piece adjacent to the concave portion of the fixed iron piece is fitted into the convex portion of the fixed iron piece. A fixed iron core for a plunger-type electromagnet device, which is formed by abutting an oil mat at the end where the concave part and the convex part fit together, and welding the end part where the concave part and the convex part fit together to a yoke.